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3 years ago

13

What is the y-intercept for the graph of 7x – 3y = –5?

2 answers:

posledela3 years ago

6 0

<span>Slope = -4.667/2.000 = -2.333
x-intercept = 5/7 = 0.7<span>
y-intercept = 5/3 = 1.7</span></span>

AysviL [449]3 years ago

3 0

2 ways to find the y int.

(1) put the equation in y = mx + b form and the y int will be in the b position
7x - 3y = -5
-3y = -7x - 5
y = 7/3x + 5/3....so 5/3 is ur y int

(2) another way is to sub in 0 for x and solve for y
7(0) - 3y = -5
-3y = -5
y = -5/-3
y = 5/3...ur y int

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Step-by-step explanation:

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3 years ago

Read 2 more answers

The slope of the lines that passes through the points (-10,0) and (-13,3)

goldenfox [79]

Answer:

-1

Step-by-step explanation:

The formula to find the slope of a line is:

$\frac{y_{2}- y_{1} }{x_{2} -x_{1} }$

where (x1, y1) and (x2, y2) are points on the line. We can substitute the points (-10, 0) and (-13, 3) into the formula and simplify:

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2 years ago

A researcher wishes to be 95% confident that her estimate of the true proportion of individuals who travel overseas is within 3%

andre [41]

Answer: a) 683 b) 1067

Step-by-step explanation:

The confidence interval for population proportion is given by :-

$p\pm z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}$

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Critical value : $z_{\alpha/2}}=\pm1.96$

Margin of error : $E=0.03$

Formula to calculate the sample size needed for interval estimate of population proportion :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.2(0.8)(\dfrac{1.96}{0.03})^2=682.951111111\approx683$

Hence, the required sample size would be 683 .

b) If no estimate of the sample proportion is available then the formula to calculate sample size will be :-

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3 years ago

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professor190 [17]

Answer:

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Step-by-step explanation:

6/54 reduces to 1/9

hope this helps

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2 years ago

If the point (-2, 5) is reflected across the y-axis, its image will be at (-2, -5). true false

Ivan

False, the image will be (+2; 5)

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2 years ago